A fourteen acre, forty foot deep area was excavated for sand and gravel for use in highway construction in the late 1980s.  This area was part of a 108 acre nature preserve located in Green County near Dayton, Ohio.  Restoration efforts of the area started shortly after termination of the excavation.  The area was planted with native prairie vegetation with the goal of restoring it to an Eastern tall grass prairie.  In 1988 the property was declared an Ohio Natural Landmark by the Ohio Department of Natural Resources.  Since the initial restoration efforts, several projects have looked at the plant community, invasive species, and other characteristics of the restored prairie.  In May 2004 soil samples were taken at transects that run both north-south and east-west through the restored prairie.  The samples were divided into an A horizon and B horizon based on the soil color and presence of organic material.  This process of sampling was repeated in May 2014, 10 years later.  This research highlights the soil changes that have occurred between 2004 and 2014 with respect to organic matter, soil texture, nutrient levels and trace metals.